What is the mass of solvent in 250 g of a 4 percent solution by mass?
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Answer and explanation
Correct answer: 240 g
A 4% by-mass solution contains 4 g solute per 100 g solution. In 250 g solution, solute mass = (4/100) × 250 = 10 g. Solvent mass is the remainder: 250 − 10 = 240 g. Thus option B is correct. The 10 g value is solute mass, not solvent mass, and the solvent cannot equal the entire solution mass.
Frequently asked questions
What is the correct answer to this question?
240 g
Why is this the correct answer?
A 4% by-mass solution contains 4 g solute per 100 g solution. In 250 g solution, solute mass = (4/100) × 250 = 10 g. Solvent mass is the remainder: 250 − 10 = 240 g. Thus option B is correct. The 10 g value is solute mass, not solvent mass, and the solvent cannot equal the entire solution mass.
Which subject and chapter does this question cover?
This is a Class 11 Chemistry question. Chapter: Chapter 01: Solutions.
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